Bonnet for hot-air valves.



Kai/k /6 H4 34 i ATTORNEY C. NOCK.

BONNET rumor AIR VALVES. APPLICATION FILED MAY 6, I914.

1,144,664. PatentedJuile 29, 1915.

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1.12, 52] 26 I 2 Z?) 29 4b 3] Z2 Z5 AW 45 27 I 9 .332? 111 /e 49 r v 55/ 5 F6 Q0 Z0 3 55l 4 l5 I INVENTOR THE NORRIS PETERS ca, FHOTO-LITHO., WASHINGTON, D. L. h

TlNTTED @TATiEit CHARLES NOCK, OF YOUNGSTOWN, OHIO.

BONNET FOR HOT-AIR VALVES.

Application filed May 6, 1814.

To all whom it may concern:

Be it known that I, CnAnLEs Noon, a citizen of the United States of America, residing at Youngstown, in the county of Mahoning and State of Ohio, have invented certain new and useful Improvements in Bonnets for Hot-Air Valves, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to bonnets for hot air valves, and has for its object to provide a device of such class, in a manner as hereinafter'set forth, for greatly facilitating the removal of the bonnet when the valve and valve stem are to be repaired.

Further objects of the invention are to provide a bonnet for hot air valves, which is simple in its construction, strong, durable, quickly connected to and removed from the valve body when occasion so requires, and comparatively inexpensive to manufacture.

"v ith the foregoing and other objects in view, the invention consists of the novel construction, combination and arrangement of parts as hereinafter more specifically described and illustrated in the accompanying drawings, wherein is shown an embodiment of the invention, but it is to be understood that changes, variations and modifications can be resorted to which come within the scope of the claims hereunto appended.

In the drawings wherein like reference characters denote corresponding parts throughout the several views :Figure l is a vertical sectional view of a hot air valve showing the adaptation therewith of a bonnet in accordance with this invention, Fig. 2 is a sectional plan, Fig. 3 is a top plan view of the inner bonnet member, and Fig. 4 is a top plan view of the inner supporting member.

Referring to the drawings in detail, the valve body consists of a casing 5 provided with a vertical lining 6, and further provided with an opening in its bottom, the wall of which is beveled as at 7, and which constitutes a valve seat. The top of the casing 5 is formed with an outwardly eX- tending annular flange 8. The lining 6 does not extend to the top of the casing 5.

Mounted upon the top of the lining 6 and abutting against the inner face of the casing 5, is an annular outer supporting mem- I her 9, which is formed of one piece of material and is provided with a centrally dis- Specification of Letters Patent.

Patented J 11116 29, 1915.

Serial No. 836,833.

posed opening having a beveled wall 10.

Mounted in the opening of the member 9 is an inner supporting member formed of two semi-circular sections 1.1 and 12, and which have beveled edges as indicated at 13 for snugly engaging the beveled edge 10 of the member 9. Each of the sections 11 and 12 has formed in its straight edge a semi-circular notch 14, and the said notches 14: register to provide the inner supporting member with a circular opening 15 at the center thereof and through said opening 15 extends the valve stem 16. Each of the sections 11 and 12 is furthermore provided with a plurality of vertically disposed supporting lugs 17, and a series of rings 18 to facilitate the positioning of the inner supporting member in the outer supporting member.

The bonnet includes an outer section, and an inner section. The outer section is indicated at 27, and is formed of a single piece of material and is annular in contour. The bonnet section 27 is mounted upon the supporting flange 8, and is provided with an outwardly projecting annular flange 19, which overlaps the top of the casing 5 and projects upon the flange 8, and is secured thereto through the medium of vertically disposed bolts 20 provided with nuts 21. The bonnet section 27 has formed integral therewith, at one side thereof, a series of vertically disposed apertured ears 22, to each of which is pivotally connected as at 23, the lower end of a clamping bolt 2%, the latter being provided with a clamping nut 25. The reference character 26 denotes a clamping bar, through which extends the bolts 2%, and the said bar 26 is capable of being engaged by the nuts 25. The function of the bar 26 will be presently referred to.

The bonnet section 27 at the sides thereof opposite the side provided with the cars 22 has formed integral therewith two pairs of vertically disposed apertured lugs 28, and pivotally connected to each pair of lugs 28, by a bolt 29 and a nut 30 is a clamping lever 31 provided in its top edge, near its other end with a groove 82 for the reception of the bar 26.

The inner bonnet section is formed of two semi-circular members 33 and 34, and each of said members has its straight edge provided with a semicircular notch 35. The notches 35,, are adapted to register with each other thereby providing the inner bonnet section with a centrally disposed opening 36 for the passage of the valve stem 16. The Wall of each of the notches 35 is beveled as at 37. Each of the members 33 and 34 of the inner bonnet section has formed inte gral with its upper face a pair of radially disposed and oppositely extending ribs 38, which have their inner ends terminate in a semi-circular enlargement 39, the latter having one side forming a continuation of the walls of the notch 35. Projecting from each of the enlargements 39, is a radially disposed rib 10 formed with a transverse groove 11. The ribs 40 extend at right angles with respect to the ribs 38. When the inner bonnet section is arranged in position, it is mounted upon the outer section and partly extends therein. The members of the inner bonnet section are detachably secured together by bolts 42, extending through the ribs 38. l/Vhen the inner bonnet section is mounted in position, the ribs 38 of one section oppose the ribs 38 of the other section, and the enlargements 39 register, forming what may be termed a circular boss at the center of the inner bonnet member to receive the members of packing gland 44, which extends into and is connected to the members of the inner bonnet member by bolts 43.

The reference character 45 denotes a valve mounted on the lower end of the stem 16.

Connected to the bonnet section 27, is a post 46, having its upper end provided with a yoke 47 in which is rotatably journaled a sheave 48, the latter having a flexible cable 49 traveling therethrough, one end of the flexible cable is connected as at 50 to the upper end of the valve stem 16 and the other end is provided with a weight 51.

The clamping levers 31 are adapted to extend in the grooves 11 and be maintained in position through the medium of the bar 26, bolts 24: and nuts 25, whereby the inner bonnet section is detachably secured in position to the outer bonnet section.

The inner bonnet section is shown as formed of two members, yet it is obvious that it can be formed of a single piece.

W hen it is desired to remove the valve stem or valve, all that is necessary to be done is to detach the inner bonnet section and remove the inner supporting member, and under such conditions the valve and stem can be readily removed from the valve for the passage of the valve stem, an outer bonnet section, an inner bonnet section mounted upon and extending in said outer bonnet section, and provided with an opening for the passage of the valve stem, a packing gland connected to said inner bonnet section, clamping levers pivotally connected to said outer bonnet section and adapted to engage in said inner bonnet section, and clamping devices carried by said outer bonnet section for maintaining said clamping levers in engagement with said inner bonnet section to retain the latter in position.

2. A bonnet for hot air valves comprising an outer supporting member, an inner supporting member arranged in said outer supporting member and having an opening for the passage of a valve stem, an outer bonnet section mounted upon said outer supporting member, an inner bonnet section mounted upon said outer bonnet section and sup-ported by said inner supporting member, and a clamping device carried by said outer bonnet section and engaging with said inner bonnet section for detachably clamping the inner bonnet section to the outer bonnet section, said inner bonnet section provided with an opening for the passage of a valve stem.

3. A bonnet for hot air valves comprising inner and outer supporting members, the former mounted in the latter and provided with vertical lugs, inner and outer bonnet sections, the former mounted upon the latter and upon said lugs, said inner section and said inner member each having an opening for the passage of a valve stem, and a clamping device carried by said outer bonnet section and engaging with said inner bonnet section for detachably clamping the latter to the former.

4. The combination with a valve body provided with, a valve seat, a valve operating in said body and ha *ing a stem projecting from the body of an inner and an outer supporting member, the former mounted in the latter, the latter mounted upon said valve body, an outer bonnet section detachably connected to said valve body, an inner bonnet section mounted upon and extending in said outer bonnet section, and a clamping device carried by the outer bonnet section and engaging the inner bonnet section for detachably clamping the latter to the former.

In testimony whereof I aiiix my signature in the presence of two witnesses.

CHARLES NOCK. lVitnesses: CHAS. Mnnnrr'r, PAUL E. Parson.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. e Wa'shington,'D. c. 

